Ventilator



A. T. HANSON. VENTILAT OR.

APPLICATION FILED FEB. 26,1919.

Patented Fb. 22

- and eifectively regulated an UNITED STATES PATENT OFFICE.

ALBERT l. HANSON, 0] KINDRED, NORTH DAKOTA.

'VENTILATOB.

To all whom it may concern:

Be it known that I, ALBERT T. Hanson, a citizen of the United States, residing at Kindred, in the county of Cass, State of North Dakota, have invented certain new and useful Improvements in Ventilators; and I do herebydeclare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to new and useful improvements in ventilators and particularly to ventilators for use in barns, chicken-houses, pig-sties, and the like.

One object of the present invention is to provide a ventilator by means of which a free circulation of air can be brought into the building without danger of drafts on the animals Another object is to provide a novel and improved ventilator which can be easily and quickly installed in buildings now in use without interference. and with economy of space.

A further object is to provide a novel and improved ventilator wherein the admission of air to the buildin canbe easily 5 controlled. Other objects and advantages will be apparent from the following description when taken in connection with the accompanying drawing.

In the drawing:

Figure 1 is a side proved ventilator in a barn, the said wal tion. 1

Fig. 2 is an elevational view from the outside of the barn. a

Fig. 3 is a view looking from the inside of the barn.

Fig. 4 is a vertical sectional view taken on the line 4-4 of Fig. 2.

Referring particularlv'to the accompanying drawing, 10 represents the wall of a barn, in which is formed the opening 11 for the reception of the outer end of the ventilator, and 12 represents theupright beams or studding of thesaid wall.

, The ventilator includes the side members 13, the lower portions of which are extended downward] at an obtuse angle and disposed through t e said opening 11 in the barn wall. Secured to the inner vertical edge of each of the side members, and at elevation of my imsition in the wall of being shown in sec- Specification of Letters Patent.

Application filed February 26, 1919. Serial No. 279,800.

to permit the air to Patented Feb. 22. 1921.

the upper portions thereof, are the members 14, the upper-ends of said members and the side members 13 being upwardly bowed, as shown at 15 to form a semicircular outline. The lower end of each member 14 is cut off obliquely, as shown at The outer ends of the lower portions of the side members 13 are cut off on vertlcal lines, and secured to the outer edges of the side members 13, the vertical faces 16, and extended upwardly and over the curved upper ends of the sides of the demos, is a sheet of metal 17. Secured to the inner faces of the above-named members of the frame of the ventilator is another sheet of metal 18, the lower'end of which terminates ap roximately midway of the length of the o liquely extending lower portions of the side members 13, whereby the entrance opening 19 is formed in the lower end of the ventilator for the admission of air into the ventilator. The upper end of the metal sheet 18 terminates short of the upper curved portion of the sheet 17, so as ass thereover and enter the building. Be ween the sheet 18 and the inner end of the sheet 17 there is formed the opening 19 from which the air issues when entering the building. Extending transversely through the members 14, near their inner vertical edges, is a shaft 20, on one end of which is formed a crank handle 21 by means of which the same may be turned, a spring keeper 21' being mounted on one of the members let for engagement by said handleto retain the same n different positions, and maintain the blade 22 at various angles. Carried by the shaft, between the inner end of the sheet 17 and the upper portionof the sheet 18, is a plate 22, which is adapted to be swung into engagement with the sheet 18- to prevent air issuing throughthe opening 19. By properly manipulating this late the opening can be controlled to regu ate the amount of air which it is desired shall enter the building, or the air completely out oif, as desired by the operator or upon the conditions in the buildln It will be noted that the vertical portion of the side members and the sheet 17 are disposed against the inner face of the barn disposing the ventilator in such position that it does not project into the building and be in the way. Furthermore, the downwardly extending portion of the upper end of the sheet 17 directs the currents of air downwardly Within the building, so that there will be no direct draft on the animals, while at the same time there will be a proper circulation of fresh air within the building. Also, by turning the regulating plate 22 the amount of air entering the building can be easily and properly c011- trolled.

Attention is called to the position of the entrance opening 19 which is directed downwardly so that the air which enters said opening moves in a vertical direction. Thus there will be no direct downward flow of extremely cold air into the ventilator.

What is claimed is: l

A ventilator comprising a chute including a. vertical portion, an obtuse-angularly extending lower end portion havmg an opening in the lower side thereof, a downwardly extending portion joined to the upper end of the vertical portion by a curved passage, the lower end of the downwardly extending portion being open, a swinging valve mounted in the downwardly extending portion, one wall of the vertical portion extending vertically between the vertical and downwardly extending portions and terminating a' distance from the juncture therebetwcen, said valve being arranged to control the opening through the downwardly extending portion, a handle mounted on the valve externally of the chute, and a spring keeper carried by the chute for engagement by said handle to maintain the handle and valve at different positions.

In testimony whereof I afiix my signature in the presence of two witnesses.

ALBERT T. HANSON. Witnesses: JOHN Or'rls,

S. E. TRuneLoon. 

